I used to have 2 swifts, both Ruger 77's, tang safety, one a sporter 24" and the other the 26" varmint, and both shot very well. I wish I still had the light one, it would have been a great coyote rifle. The heavy one was replaced with a 243, shooting 105 amax's. Long range pdog hits are much easier in the wind we get out here with the 243, but they don't explode as well, lol.
I really like the 204 for pdogs, barrel life, economy of components, low recoil and muzzle blast, and ar compatibility. For something very flat shooting out to "normal" ranges in combination with the other attributes there isn't much else in a factory round that will beat it.
But the 220 swift has waaaay more horsepower, no comparison. Apples and oranges. If one of our sponsors gets the AR in that caliber going (they're working on it) it will be tempting to get back into one.
Plus the swift is just flat out cool.